70 Amp Laser Diode Current Source with 336 Watt TEC Controller

Product Overview:

70 Amp Laser Diode Current Source with 336 Watt TEC Controller

The LDC-296 can drive full CW power up to 70 Amps, and the integrated function generator can be programmed to generate QCW pulses from 25 microseconds to CW. The QCW pulse mode feature is capable of delivering continuous pulses, single pulses, and pulse bursts which are internally or externally triggered.

Customized Protection for High Power Laser Bars and Arrays
These current sources feature multiple levels of built-in laser diode protection which have been optimized for bars and arrays. One of the unique features is a user programmable soft-start ramp of the bias current to the device under test. The factory sets the ramp time to 300 milliseconds as a default, but the user can adjust this time period from 1 millisecond up to 10's of seconds. This current ramp up and down function is designed to protect the laser from thermal shock during power up and down sequences.

The LDC-296 also offers features such as current limit, a brown-out and black-out power surge clamp, AC line filters, and a fast response to shunt the current in the event of an open circuit. There is an interlock safety connection as well as a front panel Emergency-Stop kill switch to ensure the laser is operated only when the user has determined it is safe to do so.

High Power Thermoelectric Cooler Features

The LDC-296 includes a powerful 336 watt bipolar-output TEC controller, with thoughtfully designed safety features to protect your laser investment.

Output to drive an external cooling fan, capable of supplying up to 500 mA at 24 V.

Laser Temperature limits are user-programmed via the TEC controller will switch off the laser current if the temperature falls outside the limits.

High Speed Precision PID TEC Control Loop for Fast Temperature Settling and Milli-Degree Stability.

Controller Power Interface

The LDC-296 utilizes high current DSUB-5W5 style connector on the rear panel for the laser.

A 15-pin D-sub connector is included for the TEC connections and ancillary control functions, including external photodiode measurement, Laser-On Indicator LED, temperature sensor input, and an external cooling fan control.

Laser Driver Control User Interface

The LDC-296 front-panel controls provide fast and simple setup, and an RS232 interface with LabView drivers is included standard. The LabView GUI makes set-up and control of the system fast and simple. An optional USB digital interface is available; inquire for details on ordering the USB control option.